"""
Execution state and result models
"""
from pydantic import BaseModel, Field
from typing import Optional, Any
from enum import Enum
from datetime import datetime
import uuid


class ExecutionStatus(str, Enum):
    """Status of workflow execution"""
    PENDING = "pending"
    RUNNING = "running"
    COMPLETED = "completed"
    FAILED = "failed"
    CANCELLED = "cancelled"


class NodeResult(BaseModel):
    """Result of executing a single node"""
    node_id: str
    status: ExecutionStatus
    output: Optional[Any] = None
    error: Optional[str] = None
    started_at: Optional[str] = None
    completed_at: Optional[str] = None
    duration_ms: Optional[float] = None


class ExecutionState(BaseModel):
    """Current state of workflow execution"""
    execution_id: str = Field(default_factory=lambda: str(uuid.uuid4()))
    workflow_id: str
    status: ExecutionStatus = ExecutionStatus.PENDING
    current_node: Optional[str] = None
    node_results: dict[str, NodeResult] = Field(default_factory=dict)
    variables: dict[str, Any] = Field(default_factory=dict)  # Shared state
    started_at: Optional[str] = None
    completed_at: Optional[str] = None


class ExecutionResult(BaseModel):
    """Final result of workflow execution"""
    execution_id: str
    workflow_id: str
    status: ExecutionStatus
    node_results: list[NodeResult]
    final_output: Optional[Any] = None
    error: Optional[str] = None
    total_duration_ms: Optional[float] = None
    started_at: str
    completed_at: str


class GuardianAlert(BaseModel):
    """Alert from the Guardian system"""
    id: str = Field(default_factory=lambda: str(uuid.uuid4()))
    level: str  # info, warning, error
    message: str
    node_id: Optional[str] = None
    suggestion: Optional[str] = None
    timestamp: str = Field(default_factory=lambda: datetime.now().isoformat())